Remarks:
No comparison to nuclear bombs. 120,000 people killed in Hiroshima. Whipes the whole city out, inlcuding buildings and people.
In New York it would be horrible, fear, economic depression. It would change America forever. Maybe it could happen again, everyone would be scared or worried.
Terrorist groups can use the nuclear weapons against us, to threaten us. Four threats of nuclear bombs. Terrorism, existing nuclear arsenals (US and Russia), accidents, New states will aquire nuclear weaopns, non proilferation regime collapse ( limited spread, stopped spread of nuclear weapons). More countries could get weapons, countires with them would have no restraints.

If Iran has nuclear weapons, the other middle east countires/states will want them.

Terrorist groups can’t make nuclear bombs because they don’t have the materials, but they can design them… prevent this by stopping them from getting uranium.